Taxon Report
Eriogonum thornei (Reveal & Henr.) L. M. ShultzThorne's buckwheat |
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Taxon Summary
Eriogonum thornei, commonly known as Thorne's buckwheat, is a perennial shrub in the Polygonaceae that is found only in California. It occurs within Pinyon and juniper woodland, growing at elevations from 1800 to 1830 meters. Eriogonum thornei is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.Classification
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Scientific Name: |
Eriogonum thornei (Reveal & Henr.) L. M. Shultz |
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Common Name: |
Thorne's buckwheat |
| Family: | Polygonaceae |
| Element Code: | PDPGN08233 |
| USDA Plants Symbol: | ERTH6 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial shrub |
| Blooming Period: (Jun)Jul-Aug | (Jun)Jul-Aug |
| Elevation: | 1800-1830 (5905-6005) |
| General Habitats: | Pinyon and juniper woodland |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G1 |
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State Rank: |
S1 |
| State List: | CE |
| Fed List: | None |
| Other Status: | SB_CalBG/RSABG |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 2 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 0 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 2 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| San Bernardino (SBD) | |
| Quads: Name (Quad Code) | |
| Ivanpah (3511533), Pinto Valley (3511523) | |
Threat List Data from the CNDDB
| Threat List Total: | 3 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 1 | 50 % | |
| Improper burning regime | 1 | 50% |
| Mining | 1 | 50% |
| Road/trail construction/maint. | 1 | 50% |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 December 2025].